Many cloning tools skip the hidden partitions (like manufacturer recovery partitions) or deleted files that haven't been overwritten yet. Sector-by-sector cloning captures everything , including:
EaseUS Disk Copy Portable is a lightweight, bootable or USB-drive-based disk cloning tool designed for system migrations, full disk backups, and drive upgrades — all without installing software on the host machine. It’s ideal for IT pros, system builders, or anyone who needs a portable cloning solution. easeus disk copy portable